Trench integrated mine collecting and mining method of inclined ore body

A mining method and ore gathering technology, which are applied in surface mining, mining equipment, underground mining, etc., can solve the problems of low collection efficiency of caving ore, bottom structure construction, and high mining loss rate, so as to reduce the exposed area of ​​the upper wall and reduce equipment. The effect of less loss and fewer work adjustments

Active Publication Date: 2018-02-02
CHINA MINMETALS CHANGSHA MINING RES INST
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AI Technical Summary

Problems solved by technology

[0003] The present invention provides a cutting and ditch collecting mining method for inclined ore bodies, to solve the problems of the existing inclined ore body mining methods, such as high mining difficulty, high mining loss rate, low caving ore collection efficiency, high mining cost and bottom structure construction. technical problem

Method used

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  • Trench integrated mine collecting and mining method of inclined ore body
  • Trench integrated mine collecting and mining method of inclined ore body
  • Trench integrated mine collecting and mining method of inclined ore body

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Embodiment 1

[0033] like figure 1Shown, the cutting ditch collecting ore mining method of the inclined ore body of the present embodiment comprises the following steps: a, divide the stage along the vertical direction of the ore body, divide the ore block along the stage strike, divide the segment along the height of the ore block, and divide the segment in the segment Re-divided into layers; b, mining and cutting engineering construction; c, mining and mining layer by layer from bottom to top; d, layered filling and trench construction; e, repeat steps c and d, start the next layer operation; f, complete the mining operation. This method is suitable for the mining of thin to medium-thick ore bodies with inclined moderate stability and above. The trench ore-collecting mining method of the inclined ore body of the present invention, the constructed trench slope 11, the ore collection road 13 and the ore body footwall slope 12 jointly form a trench ore collection system, and after the upper...

Embodiment 2

[0044] In this embodiment, only the trench is constructed at the lowest part of the stope, and the ore bodies in the upper part of the trench gather in the trench after collapse. The mining is expanded from the bottom cutting roadway to the upper and lower walls, and then the mining is carried out upwards to a certain height to meet the height requirement for the construction of the trench. Generally, the mining height is ≥ 2m, and then the trench is constructed. The trench is constructed by the bag filling method, and the layered stacking construction technology is adopted, and the slope angle of the trench is ≥ the natural repose angle of the ore. The trench slope 11 , the reserved ore-collecting road 13 , and the footwall slope 12 of the ore body form the trench; after the trench construction is completed, follow-up operations can begin.

[0045] During implementation, a cutting and ditch mining method for inclined ore bodies is provided, which can realize safe and efficien...

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Abstract

The invention discloses a trench integrated mine collecting and mining method of an inclined ore body. A trench construction area is arranged in an empty area formed after mining. Trench constructionof the trench construction area specifically includes the steps that a trench slope used for guiding falling ore to move downward and/or protect the upper disc surface of the ore body is constructed at the corner of the upper disc surface and a bottom plate surface of the trench construction area; a mine collecting channel is reserved in the bottom plate surface when the trench slope is constructed, and the constructed trench slope, the reserved mine collecting channel and the lower disc slope of the ore body form a trench used for gathering the falling ore extracted from the upper portion ofthe trench to the mine collecting channel; the ore body on the upper portion of the trench is extracted and output from the upper portion and/or the side face of the mine collecting channel. The method easily improves the ore recovery rate, ore output efficiency, productivity, recovery safety and comprehensive economic benefits, and is suitable for exploitation of inclined ore bodies with medium stability from thin to medium thick and construction of a trench type mine output bottom structure.

Description

technical field [0001] The invention relates to the technical field of mine mining, in particular to a mining method for cutting and ditch retaining wall of an inclined ore body and ore extraction. Background technique [0002] Most of the ore bodies are inclined ore bodies, but when the inclination angle of the ore body is small, first, the collapsed ore between the surrounding rock of the ore body wall and the layered filling body is extremely difficult to recover due to space constraints, resulting in extreme Large mining loss, this situation generally increases with the decrease of the included angle. Second, the exposed span of the hanging wall of the ore body is large, and the surrounding rock caving on the hanging wall causes ore dilution, and the safety of mining cannot be guaranteed. Bolts and anchor cables are often used for support, which requires a large amount of support work and low efficiency. Low. Third, after the ore body collapses, due to blasting, the or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16E21F15/00
CPCE21C41/16E21F15/00
Inventor 赖伟刘婉莹柳小胜肖木恩杨宁
Owner CHINA MINMETALS CHANGSHA MINING RES INST
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